Hey all,
While rebuilding one of my 8.25 axles, I thought I'd try one of the RATECH solid pinion bearing spacers.
I put in 2 shims and got 22.5 in-lb of rolling torque. I figured this was good since spec is 10-30 for new bearings. Then I assembled the rest of the differential and got it all setup with backlash and put gear marking compound to check the pattern. All good.
Then I went to put the final seal and new yolk washer/nut on. Then not so good. I was suddenly at 55 in-lb of torque.
After scratching my head over this, I finally took the carrier out and it was still around 55 in-lb.
I took the pinion out and re-shimmed it a bunch of times ending up with 0.038 shims at 7.5 in-lb. I removed the yolk and re-installed it, and was up to around 12.5 in-lb. Then I did it again, and was up to 15-17.5 in-lb. Then I did it again, and it was still around 15-17.5 in-lb.
Has anyone else had this experience? I thought by rotating the pinion back and forth a few times while tightening down the yolk would have done the trick and the preload would have remained the same no matter how many times I took the yolk on and off.
While rebuilding one of my 8.25 axles, I thought I'd try one of the RATECH solid pinion bearing spacers.
I put in 2 shims and got 22.5 in-lb of rolling torque. I figured this was good since spec is 10-30 for new bearings. Then I assembled the rest of the differential and got it all setup with backlash and put gear marking compound to check the pattern. All good.
Then I went to put the final seal and new yolk washer/nut on. Then not so good. I was suddenly at 55 in-lb of torque.
After scratching my head over this, I finally took the carrier out and it was still around 55 in-lb.
I took the pinion out and re-shimmed it a bunch of times ending up with 0.038 shims at 7.5 in-lb. I removed the yolk and re-installed it, and was up to around 12.5 in-lb. Then I did it again, and was up to 15-17.5 in-lb. Then I did it again, and it was still around 15-17.5 in-lb.
Has anyone else had this experience? I thought by rotating the pinion back and forth a few times while tightening down the yolk would have done the trick and the preload would have remained the same no matter how many times I took the yolk on and off.